2.1 The Nature of Matter

Question 1

The basic unit of matter.

Answer 1

Atom

Question 2

What are the
subatomic particles that make up atoms?

Answer 2

Protons, neutrons, and electrons.

Question 3

What two subatomic particles forms the nucleus, at the center of the atom?

Answer 3

Protons and neutrons

Question 4

Are positively charged particles (+)

Answer 4

protons

Question 5

These particles carry no charge.

Answer 5

neutrons

Question 6

Is a negatively charged particle (-).

Answer 6

electrons

Question 7

Two subatomic particles that have the same mass?

Answer 7

Protons and neutrons

Question 8

Atoms have equal numbers of?

Answer 8

Electrons and protons

Question 9

Is a pure substance that is made up of only one
kind of atom.

Answer 9

Elements

Question 10

Each element has a one- or two-letter symbol.

Answer 10

For example, the symbol for carbon is C, and for sodium is Na.

Question 11

The number of protons in the atom of an element is the element’s

Answer 11

atomic number

Question 12

The total number of protons and neutrons
in an atom is the atom’s

Answer 12

mass number

Question 13

In the ionic bond, which one likes to give away electrons?

Answer 13

Metals

Question 14

In the ionic bond, which one likes to receive electrons?

Answer 14

Nonmetals

Question 15

Metal + Nonmetal=

Answer 15

Ionic Bonding

Question 16

Nonmetal + Nonmetal=

Answer 16

Covalent Bonding

Question 17

opposite charged ions (+-) it

Answer 17

attract each other

Question 18

Atoms that have positive and negative charges

Answer 18

ions

Question 19

Single bond, doble bond, and triple bond

Answer 19

2, 4, 6, are examples of covalent bonding

Question 20

Shared of electros

Answer 20

Covalent Bonding

Question 20

The smallest unit of most
compounds

Answer 20

Molecule

Question 21

Transferred of electrons

Answer 21

Ionic Bonding

Question 21

Is a substance
formed by the chemical combination of two or more elements in
definite amounts

Answer 21

A compound

Question 22

The structure that results when atoms are joined together by covalent
bonds is called

Answer 22

a molecule

Question 23

What are the main kinds of chemical bonds?

Answer 23

Ionic Bond and Covalent Bonds

Question 24

Is a pure substance
that consists entirely of one type of atom.

Answer 24

Chemical Element

Question 25

Atoms of the same element that differ in the number of neutrons they contain are known as

Answer 25

Isotopes

Question 26

Atoms in compounds are held together by

Answer 26

chemical bonds